JERSEY CITY - An 18-year-old man was lured out of his family's apartment and shot to death Monday night, according to his uncle.

Angel Cruz was watching his three young cousins inside their Rose Avenue apartment with his girlfriend when he received a call around 9:30 p.m. from a "friend" asking for a cup of water, his uncle Raul Martinez said.

Three of the five shots fired struck the 18-year-old and he collapsed inside the hallway of the multi-family home. He died at Jersey City Medical Center early this morning, he said.

Officials have only confirmed they are investigating a fatal shooting on the block.

The victim's uncle said the suspect -- who is also a teenager -- slowly walked from the scene to disguise himself. A security camera outside the home captured the entire shooting, he said.

"That's the problem," Martinez said, as he looked for bullet holes outside of his house. "It's kids killing kids."

Cruz's girlfriend called police after the shooting and then called his uncle. Martinez was packing up a cart at Walgreens when he learned his nephew was gunned down.

Martinez said blood stained the hallway inside the two-story home, while blood could still be seen on the sidewalk outside the building more than 12 hours after the fatal shooting.

While the teen did not live at the home with his uncle, he came over for dinner a few nights a week.

The Jersey City Public Schools confirmed Cruz was enrolled as a student at Lincoln High School. The district declined to comment any further.

The section of Jersey City is considered one of the most violent. Last month a 28-year-old father was killed and three others were injured in a shooting just two blocks away.

Additional information was not immediately available. It is the second murder in Jersey City this year.